Don't get your hopes up *too* high. Hope you get lucky, but,
Humphrey from PCnut won't even offer guaranteed 1 ghz to 1333 mhz overclocks, because he emailed me that he recently bought some 1.1 ghz chips, and the highest they will clock is 112 FSB (112x11=1232). And I would expect a 1100E to overclock farther, but...remember what happened with those cC0 750's that couldn't even clock as high as a cB0 700E......
I would expect 1200-1250 from a 1000E cpu, unless you get really lucky or take cooling to the next level.
FWIW, my 1000"EB" is running nicely at 155x7.5 (1162.5), at default voltage and for some reason, 155 FSB is more stable than it was on my 600e@930 (had to use 150 fsb because of all the ram errors---Unreal engine games would crash while loading etc).
I still can't figure out why, because both CPUs pass burnP6, but the 600e required 1.70v for 900, and 1.75v for 930 (unusuable).